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Fitting a Inder Sidecar to a 56 Thunderbird #629641
12/11/15 1:51 am
12/11/15 1:51 am
Joined: Sep 2013
Posts: 134
NSW Australia
HeyWilly Offline OP
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HeyWilly  Offline OP
BritBike Forum member
Joined: Sep 2013
Posts: 134
NSW Australia
Greetings folks
I am helping a mate (well actually I'm doing all the work) fit a Inder Rocket Sidecar to his 56 Thunderbird (with a 58 frame).
Given it was thrown together in India and QC'd by a blind one armed Char Wallah, its not a piece of tech art!
The fitting kit is a univseral instructionless bag of bits and pieces - although the parts are relatively straight forward and the general fitment rules of not having the support arms parallel to each other and the sidecar wheel leading the bike rear wheel from anywhere between 6" to 8", I am good - BUT - I do need some help of where the attaching points should be on this model bike.
Kind regards
Chris
[img][IMG]http://i1301.photobucket.com/albums...nn51p.jpg[/img][/img]





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Re: Fitting a Inder Sidecar to a 56 Thunderbird [Re: HeyWilly] #629692
12/11/15 3:01 pm
12/11/15 3:01 pm
Joined: May 2013
Posts: 726
Overland Missouri
O
old mule Offline
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old mule  Offline
BritBike Forum member
O
Joined: May 2013
Posts: 726
Overland Missouri
For a start, the lower front can be a ball-ended bolt through the front engine plates, and the rear can be a similar bolt through the (former) center stand lugs....
Triumph in those years put sidecar mounting info in some manuals, and I would look at the many road tests of Triumph combinations that were published in the Englis motorcycle press.

Re: Fitting a Inder Sidecar to a 56 Thunderbird [Re: HeyWilly] #629693
12/11/15 3:01 pm
12/11/15 3:01 pm
Joined: Oct 2006
Posts: 780
in my house
K
KADUTZ Offline
BritBike Forum member
KADUTZ  Offline
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K
Joined: Oct 2006
Posts: 780
in my house
Chris_W

I did a post on this over at the Rat where you asked.

I like where you have the three mounts placed. If it was me I would place the fourth where the two frames bolt together at the bottom front engine area.

As far as the wheel lead you will also need to allow for leanin/out and toe in on the sidecar wheel.
Take a look at what was recommended at www.sidecar.com


K


1970 T120RT
1978 T140V
Re: Fitting a Inder Sidecar to a 56 Thunderbird [Re: HeyWilly] #629757
12/12/15 4:16 am
12/12/15 4:16 am
Joined: Jul 2013
Posts: 470
Death row next in line norfolk
Tribsauk Offline
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Tribsauk  Offline
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Posts: 470
Death row next in line norfolk
I kept this on file as I am rebuilding a 57 Thunderbird and it looks like it got a lot of original parts.But also clearly shows the sidecar mounts one between the rear of tank and seat the front down tube mount and the most important the main mount that connects under the frame. There should also be a fourth mount which is at lower front frame where down tube meets subframe.

http://www.bonhams.com/auctions/20254/lot/9/

Dave


1941 BSA WM20
1958 TRI-BSA 750 PRE UNIT
1957 THUNDERBIRD
1932 R E MODEL GS SPECIAL
1947 BSA YM21
Re: Fitting a Inder Sidecar to a 56 Thunderbird [Re: Tribsauk] #629968
12/13/15 7:30 pm
12/13/15 7:30 pm
Joined: Sep 2013
Posts: 134
NSW Australia
HeyWilly Offline OP
BritBike Forum member
HeyWilly  Offline OP
BritBike Forum member
Joined: Sep 2013
Posts: 134
NSW Australia
Hi Dave
I found the 2 'Triumph' mounting points on the frame - pics supplied - the bottom mount is a bit obscured by the main stand but will be removed - it has a cable tie through it to hold the crank breather hose. I can probably use it with the sliding mounting bracket but cannot use the top mount - the mounting kit does not have any goose neck or mounting point on the sidecar frame to facilitate mounting it there.
The front lower mounting point is a clamp and goose-neck as supplied - pic shows!
The lower rear mount (shown fitted near the rear pax footrest) will be removed because the arm supplied is too long for the both the top rear and lower rear mounts - that's why I used the shorter arm. If I used the longer arm at the top I would not be able to get the correct sidecar wheel lead/bike rear wheel distance ant the 2 top arms would be parallel :-(





Regards
Chris


What time is it Eccles?
Re: Fitting a Inder Sidecar to a 56 Thunderbird [Re: HeyWilly] #636308
01/21/16 9:06 pm
01/21/16 9:06 pm
Joined: Sep 2013
Posts: 134
NSW Australia
HeyWilly Offline OP
BritBike Forum member
HeyWilly  Offline OP
BritBike Forum member
Joined: Sep 2013
Posts: 134
NSW Australia
Finally got it all finished and painted as per the owners request.
A fun outfit to ride and a little sad to see it go frown
Thanks to everyone for their help!!! bigt
Chris


Re: Fitting a Inder Sidecar to a 56 Thunderbird [Re: HeyWilly] #645863
03/26/16 6:01 pm
03/26/16 6:01 pm
Joined: Apr 2004
Posts: 1,092
somewhere in the UK
Mike Muir Offline

Life member
Mike Muir  Offline

Life member
Joined: Apr 2004
Posts: 1,092
somewhere in the UK
FWIW, had several outfits over the years, even fitted the same chair to 2 different Yameras, sold the chair and bought it back again 2 years later to fit to the same bike. Very addictive things.
Nice job, don't get too hung up on the no parallel thing, as long as there is some triangulation on 3 of the mounts all should be fine, every time you do one is different and access to the bike frame often dictates placement, this is why there is so much leeway in the side car wheel lead figure.

Attached Files Seca January 84.jpgBSA Road Rocket outfit.jpgRound Scotland Rally, Cawdor Castle-2, 8 September 1976.jpg

Mike, home is where we moor it.
Re: Fitting a Inder Sidecar to a 56 Thunderbird [Re: Mike Muir] #646033
03/27/16 8:00 pm
03/27/16 8:00 pm
Joined: May 2013
Posts: 726
Overland Missouri
O
old mule Offline
BritBike Forum member
old mule  Offline
BritBike Forum member
O
Joined: May 2013
Posts: 726
Overland Missouri
I bet that Ducati was a fun outfit to drive...

Re: Fitting a Inder Sidecar to a 56 Thunderbird [Re: HeyWilly] #646552
03/31/16 2:44 pm
03/31/16 2:44 pm
Joined: Apr 2004
Posts: 1,092
somewhere in the UK
Mike Muir Offline

Life member
Mike Muir  Offline

Life member
Joined: Apr 2004
Posts: 1,092
somewhere in the UK
Indeed, got over 100mph on the almost new M25 one sunny Saturday. Buddy in the chair thought it was a blast. We were on our way to a London Norton dealer to get some seals for the roadholders that were fitted to the BSA trials outfit in the b/w picture. This was way before it became a parking lot, of course.
Also my first wife and I use to cruise to Brighton of an evening, and see off some of the wannabe boy racers on the A23 London to Brighton road. One trip the ring holding the lower pots exhaust pipe in place slackened off, lots of flames when closing the throttle, even at slow speeds. First job when it cooled down at home was to wire it to stop it undoing. The castings were all drilled for it from the factory.


Mike, home is where we moor it.

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