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Re: new engine [Re: lemans] #646167 03/28/16 5:06 pm
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gavin eisler Offline
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Hi Anne, nice progress, in the pic below you can see the Devimead solution for lubrication of the Timing side bearing, the original pressure feed is blanked and a small cavity is created on the top side of the bearing boss allowing oil to drip into the bearing.
[Linked Image]


71 Devimead A65 750
56 Norbsa 68 Longstroke A65
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Re: new engine [Re: lemans] #646176 03/28/16 5:38 pm
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lemans Offline OP
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hi Gavin, that is indeed a clever solution, being a needle roller the dripfeed is more than enough. As you can see in my earlier posts I used a scrub srew with a 1mm orifice. Same setup as with the old engine which lasted some 32 years/ 12000 miles. Regards A

see post 500026 and just follow the links

Last edited by lemans; 03/28/16 5:50 pm.
Re: new engine [Re: lemans] #680466 01/08/17 1:02 pm
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lemans Offline OP
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been a while but this christmass the new engine is work in progress.
solved the axiaal end float voodoo, made a new bearing out of some phosphor bronze.
in the end it is just a 5,25 mm thick slab of bronze, milled to the correct dimensions. end float is now 0,04 mm

[Linked Image]

[Linked Image]

next jobs on the list are:
1. camshaft
2. the SRM-Oilpump
3. gearbox, pity the five-speed from Scotland isn't available yet so have to resort to the four-speed.

regards A


Last edited by lemans; 01/08/17 3:14 pm.
Re: new engine [Re: lemans] #680496 01/08/17 3:59 pm
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JER.Hill Offline
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Hi Anne

Nice to see your moving forward again. With regards to the 5 speed clusters, I've been surprised by the lack of interest, other than myself the other two which I know are in use, Mark Parker and Gavin Eisler are happy with the performance, of the 11 sets sold others don't really give you much feed back.

Hopefully your post can generate a little more interest, at the moment there are your self and four other who have shown an interest. I need to order a batch of ten, so if anyone is interested PM here or get in touch.

regards

John

Re: new engine [Re: lemans] #680502 01/08/17 4:29 pm
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lemans Offline OP
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well the five-speeder can be exchanged with the engine in the frame, so there's no real hurry yet
still..... I want to shift one more time when they don't expect it.

the bike used to be run two-up and then the four-speed hasn't the best spaced ratio's.
future use is again two-up
regards A

Re: new engine [Re: lemans] #684593 02/11/17 8:53 am
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lemans Offline OP
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what better way to spend a snowy saturday morning

[Linked Image]

[Linked Image]

Last edited by lemans; 02/11/17 8:54 am.
Re: new engine [Re: lemans] #701030 07/07/17 2:02 pm
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lemans Offline OP
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[***] photobucket

Re: new engine [Re: lemans] #701031 07/07/17 2:03 pm
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lemans Offline OP
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cool this auto-censor-function

see if it works with this one

ooops Photobucket

Last edited by Allan Gill; 07/11/17 3:27 pm. Reason: This is a family site ;)
Re: new engine [Re: lemans] #707812 09/09/17 11:37 am
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lemans Offline OP
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progress with the new engine is slow, very slow. with the upcoming winter season the objective is to have all components ready.

and now the camshaft. I purchased a 90-drg camshaft a couple of years ago. and it is not straight. although new the complaining period is long past and I'm having a new one made at the local camshaft-shop

http://www.hurricaneracing.nl/

question now is:

are the profiles for inlet- and exhaust-cam identical?.

regards Anne

Re: new engine [Re: NickL] #708184 09/12/17 4:48 pm
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Allan Gill Offline
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Originally Posted by NickL


It depends which cam you have. The standard 'spitfire' form is different.



I think this also alters depending on if its an original cam (to which I think your referring) or a remanufactured item, which I have seen lift heights and duration different to that of the factory item (and different to other makers versions of the same cam)

The SRM race cam as far as 360 degree motors are concerned is a good cam.


beerchug
Re: new engine [Re: Allan Gill] #708243 09/13/17 9:29 am
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lemans Offline OP
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Originally Posted by Allan Gill
[quote=NickL]

The SRM race cam as far as 360 degree motors are concerned is a good cam.


I do think so but where can I find the profiles for the inlet- and exhaustcam.
I do not think they are the same.

regards Anne

Re: new engine [Re: lemans] #708581 09/15/17 9:12 pm
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Dave T Offline
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It seems I can no longer view the images on the forum threads unless I fork over money to photobucket to upgrade my account. Or am I doing something wrong?

Re: new engine [Re: lemans] #708584 09/15/17 9:21 pm
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shel Offline
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No, Dave you have to pay money to upload your own photos from photobucket, you still won't be able to see others photos unless the poster of those photos pays the ransom too


When given the choice between two evils I picked the one I haven't tried before
Re: new engine [Re: shel] #708876 09/18/17 12:08 pm
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BrizzoBrit Offline
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Go to BritBike FAQ.

Look at the photobucket ransom post by Andy Higham.

If you use Chrome as your browser you can install the app mentioned that shoves it right up Photo*uckits backside and allows you to view the images.

It works!!

Ray


BSA 1969 A65F
BSA 1966 A65H
Triumph 1968 T120
Kawasaki A1R
& too many projects!
Re: new engine [Re: lemans] #746731 08/25/18 8:50 pm
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lemans Offline OP
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trying to get this thread running again.
bought a 5-speeder lately in Portugal from James, nice chap who had one lying around.
convinced my wife that a holiday to Pombal (PT) was long overdue, and who's having coffee at the Cafe Nicolai, James with a gearbox. how lucky can you get.
she took it rather well.

don't know about photowhatever and running my own server now, trying to show some pictures, have patience

Last edited by lemans; 08/25/18 9:08 pm.
Re: new engine [Re: lemans] #746801 08/26/18 12:57 pm
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Allan Gill Offline
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looking forward to it Lemans


beerchug
Re: new engine [Re: lemans] #749177 09/14/18 7:09 pm
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lemans Offline OP
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does anyone know if Nourish Engineering is stil in business?.

http://www.nourishengineering.co.uk/page.php

I'm trying to contact Chris by mail and phone but to no avail, probably a new number?.

regards Anne

Re: new engine [Re: lemans] #749201 09/14/18 9:59 pm
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gavin eisler Offline
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Mr Nourish sold the business a few years ago, the new owner has disappointed quite a few customers, not surprised they are incommunicado. Ive had no personal dealings, but from what Ive seen, you had better look elsewhere .


71 Devimead A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: new engine [Re: lemans] #749255 09/15/18 8:18 am
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lemans Offline OP
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Last edited by lemans; 09/17/18 3:19 pm.
Re: new engine [Re: lemans] #749499 09/17/18 3:19 pm
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lemans Offline OP
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indeed bad news, done some reading, especially the CRMF-Forum and reports are bad.
the reason I wanted to contact Chris is that the 90-drg crankshaft he made doesn't fit. main dimensions are "slightly" off and although it fits the crankcase, it doesn't fit the barrel.

have to revert to a std 360-drg setup. pictures to follow later.

regards A

#@#$%$#@!%^&^%$#

Re: new engine [Re: lemans] #749526 09/17/18 5:37 pm
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gavin eisler Offline
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Thats a tough break, can it be made to work ?, there are other decent machine shops out there.
I read somewhere on a facebook page that you are not the only one to get badly made stuff from him.
In the same thread someone suggested contacting Mr Nourish, he uses a decent engineering shop, although no longer trading/ doing this work he knows another shop thats capable.

I tried to search for the facebook info and got lost, it was either on the "British Bike mechanics " or "BSA Singles and Twins"

Theres a bloke across the pond that builds staggered cranks , you give him the crank, it gets sawn in half , welded rebalanced, sheds a lot of flywheel weight. Interesting site.
http://www.offsetcrank.com/bsa_index.html
I have no idea if this is still current.


71 Devimead A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: new engine [Re: lemans] #749609 09/18/18 8:53 am
Joined: Dec 2004
Posts: 218
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Whisper Offline
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Mark Z

I trust that you wore some heat-proof gloves when you pushed the bearing out with your fingers at 200 degrees :-)

Re: new engine [Re: Whisper] #749663 09/18/18 7:43 pm
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lemans Offline OP
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Originally Posted by Whisper
Mark Z

I trust that you wore some heat-proof gloves when you pushed the bearing out with your fingers at 200 degrees :-)


if referring to the torrington inside the gearbox, a std heatgun and a screwdriver did the trick, no injuries sustained
if referring to the crankshaft timing side bush, applied brute force and again no injuries

but to assemble the needlerollerbearing inner race onto the crankshaft is a tricky operation.
apply heat with the heatgun, then pick up the very hot inner race and position it on the exact position on the crankshaft timing side stub.
and keep holding it in position and wait for the inner race to shrink

cool your fingers and observe position of inner race, repeat untill satisfied.
and yes I wore some gloves

regards A

Last edited by lemans; 09/18/18 7:44 pm.
Re: new engine [Re: lemans] #749666 09/18/18 8:12 pm
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gavin eisler Offline
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When I took my devimead timing side bearing apart the inner race had a convenient 45 degree flat on the crank side rim, after heating it popped off easily with a small chisel tapped into the bevel. When I fitted the new race I reground the bevel, glad I did , it needed to come off for a small shim to prevent the crank cheeks binding on the bearing outer, this had to be stoned a little for a few more thou relief. Although the same OD and ID the new bearing was a few thou longer than the original and a couple of subtle changes were needed to get the correct float on the ball part of the combi bearing.


71 Devimead A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: new engine [Re: lemans] #758628 12/08/18 8:55 pm
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lemans Offline OP
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[Linked Image]

as I was rather pissed of by photobucket's ransom actions already one year ago, I decided to move forward with a raspberry-pi webserver. took some time but this is the result.
tadaaa. a server with my own pictures.

as the chris-crank is of no use yet (not without extensive modifications) I reverted to the tested 360-degree setup (had to, damn)
J.Hill alloy barrel
5-speed gearbox
newby belt

progress is being made
regards A

Last edited by lemans; 12/09/18 3:29 pm.
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