Britbike forum

Classic British Spares Klempf British PartsBaxter Cycle BritBike Sponsor SteadfastCyclesSRM Engineering Lucas Classic Motorcycle Industrial tec supply Hepolite Pistons The Bonneville ShopLowbrow Customs

Upgrade your membership to: Premium Membership | Gold Membership | Life Membership | Vendor Membership | Site Sponsor Membership
Member Spotlight
Zimm
Zimm
The land of pleasant living
Posts: 329
Joined: August 2001
ShoutChat
Comment Guidelines: Do post respectful and insightful comments. Don't flame, hate, spam.
Top Posters(30 Days)
quinten 88
Rohan 67
Top Likes Received (30 Days)
quinten 12
Newest Members
Teager, vanGinneke, Gearhard, yornocT120R, robert wilby
11,840 Registered Users
Who's Online Now
3 members (L.A.B., KC in S.B., Al Eckstadt), 34 guests, and 68 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Joined: Apr 2018
Posts: 66
C
Cliff R Offline OP
Britbike forum member
OP Offline
Britbike forum member
C
Joined: Apr 2018
Posts: 66
hi, new to heat guns
like to explore heating alloy engine cases, studs, nuts and other parts on Triumph
to remove bearings, free up stubborn studs nuts and other
is bbq cylinder LPG/LP/Propane ok?
any particular head/gun recommended?
like to avoid damage/melting parts
thks cliff

Triumphs on eBay
Joined: Jul 2012
Posts: 1,985
Likes: 20
A
Britbike forum member
Offline
Britbike forum member
A
Joined: Jul 2012
Posts: 1,985
Likes: 20
I manage with a ryobi paint removal gun 2k

Last edited by AngloBike; 06/15/18 2:04 pm.
Joined: Nov 2008
Posts: 3,462
Likes: 44
D
Britbike forum member
Offline
Britbike forum member
D
Joined: Nov 2008
Posts: 3,462
Likes: 44
Two speed electric. Propane and mapp gas are way too hot.


1968 T120R
1972 T120RV
Any advice given is without a warranty expressed or implied.
Joined: Sep 2008
Posts: 1,691
Likes: 39
S
Britbike forum member
Offline
Britbike forum member
S
Joined: Sep 2008
Posts: 1,691
Likes: 39
Propane/butane is good. Be sensible and you won’t damage anything.

Joined: Oct 2012
Posts: 5,901
Likes: 148
knuckle head
Offline
knuckle head
Joined: Oct 2012
Posts: 5,901
Likes: 148
I use the oven set on about 210-220 degrees F...Put cases in warm oven bearing side down, it's done when you hear the clunk of the bearings falling out...Remove any studs at the same time...Cool at room temperature, serve with a garnish of cash and a pinch of profanity


79 T140D, 89 Honda 650NT ,61 A10 .On a bike you can out run the demons
"I don't know what the world may need
But a V8 engine is a good start for me
Think I'll drive to find a place, to be surly"
Joined: Mar 2005
Posts: 10,707
Likes: 91
J
Britbike forum member
Offline
Britbike forum member
J
Joined: Mar 2005
Posts: 10,707
Likes: 91
Plus 1 for HB's post. Plus Plus 1 for 220F!!!!

It is about even heating of the whole casting vs local heating. This is especially true when removing and installing bearings.

Joined: Jun 2007
Posts: 6,923
Likes: 17
H
Britbike forum member
Offline
Britbike forum member
H
Joined: Jun 2007
Posts: 6,923
Likes: 17
Wait a minute. That could get too expensive. You have to take your PO'd wife out for date afterward for stinking up the house.

Cheers,
Bill

Last edited by HawaiianTiger; 06/17/18 7:32 pm.

Bikes
1974 Commando
1985 Honda Nighthawk 650
1957 Thunderbird/T110 "Black Tiger"
Antique Fans: Loads of Emersons (Two six wingers) plus gyros and orbiters.
Joined: Oct 2012
Posts: 5,901
Likes: 148
knuckle head
Offline
knuckle head
Joined: Oct 2012
Posts: 5,901
Likes: 148
Originally Posted by HawaiianTiger
Wait a minute. That's could get too expensive. You have to take your PO'd wife out for date afterward for stinking up the house.

Cheers,
Bill

Not at all....She doesn't mind me using the kitchen oven and some odor...But that doesn't mean I don't have to take her out.... grin

She's a better engine builder than me anyways...


[Linked Image]


79 T140D, 89 Honda 650NT ,61 A10 .On a bike you can out run the demons
"I don't know what the world may need
But a V8 engine is a good start for me
Think I'll drive to find a place, to be surly"
Joined: Apr 2018
Posts: 66
C
Cliff R Offline OP
Britbike forum member
OP Offline
Britbike forum member
C
Joined: Apr 2018
Posts: 66
thks everyone

Joined: Sep 2001
Posts: 1,337
Likes: 22
T
Britbike forum member
Offline
Britbike forum member
T
Joined: Sep 2001
Posts: 1,337
Likes: 22
Line the oven tray with alfoil, catches any oil running with the heat, use welding gloves to handle the cases when hot. Actually alfoil is good for many things, I've welded up bikes with electrics and motors still in the bike...used alfoil to mask the area first. Its cheap and easy to get at any supermarket.

Joined: Feb 2006
Posts: 938
Likes: 2
G
Britbike forum member
Offline
Britbike forum member
G
Joined: Feb 2006
Posts: 938
Likes: 2
Cliff,

I use the gas BBQ with the hood down. Anything else is, frankly, un-Australian.

I freeze bearings and heat cases. Has always worked. I've never had to use heat to remove nuts or bolts but a small LPG torch should be hot enough.


'51 C11 in a '54 C10L frame. Back on the road...
'70 Triumph Trophy 500. Next on the bench for a refresh!
'72 Triumph Tiger 650. Back on the road...
Joined: Aug 2001
Posts: 5,645
Likes: 76
M
Britbike forum member
Offline
Britbike forum member
M
Joined: Aug 2001
Posts: 5,645
Likes: 76
I had to replace the high gear bearing once on a T140 with the engine in the frame (clutch, primary drive, sprocket, and gear cluster removed). I borrowed a 200 degree "temp stick" (kind of like a crayon that melts at a specific temperature), and went round and round the bearing slowly with a propane torch with a rosebud tip, periodically testing with the temp stick. It took about 15 minutes to get the case around the bearing up to temp, and I could have pushed the bearing out with my fingers.

This is pretty specific to this bearing; I can't think of any other bearings you would be able to change without having the crankcase out and split, but I wanted to point out that it is possible to heat with a torch if necessary.



Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.
Joined: Apr 2017
Posts: 871
Likes: 2
M
Britbike forum member
Offline
Britbike forum member
M
Joined: Apr 2017
Posts: 871
Likes: 2
I got all my case bearings out like that. I didn’t use a temp stitch though.

Joined: Jan 2014
Posts: 3,467
Likes: 26
R
Britbike forum member
Offline
Britbike forum member
R
Joined: Jan 2014
Posts: 3,467
Likes: 26
...tony, you have a gal that let you wrench all day and then also participate?...beyond incredible.

Joined: Aug 2014
Posts: 1,823
Likes: 1
T
Britbike forum member
Offline
Britbike forum member
T
Joined: Aug 2014
Posts: 1,823
Likes: 1
Fernando, there really are some understanding sheilas like that around . But we civilised blokes have an oven in our workshop, and that really impresses the ladies when you take them there to view your micrometer collection !

Joined: Jan 2014
Posts: 3,467
Likes: 26
R
Britbike forum member
Offline
Britbike forum member
R
Joined: Jan 2014
Posts: 3,467
Likes: 26
....mate, may be on your side not here; also the surfer gals have too much testosterone for my taste.

Joined: Nov 2011
Posts: 7,288
Likes: 428
Britbike forum member
Offline
Britbike forum member
Joined: Nov 2011
Posts: 7,288
Likes: 428
Originally Posted by John Healy
Plus 1 for HB's post. Plus Plus 1 for 220F!!!!
It is about even heating of the whole casting vs local heating. This is especially true when removing and installing bearings.
For what it's worth, my preferred method is to bring a large tub with water to a boil on the BBQ with the cases in it. The slow rise time of the water temperature ensures uniform heating and, unlike the dial on a stove, the boiling point of water (207 oF at my altitude) is accurately self-calibrated. The 13 oF lower temperature than 220 oF means a 1" section of Al will expand by 0.00017" less than it would at that higher temperature, which should be negligible even if an oven's dial is accurately calibrated, which it almost certainly is not, and if the temperature throughout the oven is uniform, which it also almost certainly is not.

Joined: Jul 2012
Posts: 1,985
Likes: 20
A
Britbike forum member
Offline
Britbike forum member
A
Joined: Jul 2012
Posts: 1,985
Likes: 20
I am firmly of the opinion that the 100°c was put into the original manuals because 50's/60's triumph workshops wouldn't have had a torque wrench or infra red thermometer, they all had a kettle for a brew. You can't fcuk up a component in a tub of hot water.

A place I used to visit used a gas welding kit to make tea


Moderated by  John Healy 

Link Copied to Clipboard
Job CycleBritish Cycle SupplyMorries PlaceKlempf British PartsPodtronicVintage MagazineBSA Unit SinglesBritBike SponsorBritish Tools & FastenersBritBike SponsorBritBike Sponsor






© 1996-2021 britbike.com
Powered by UBB.threads™ PHP Forum Software 7.7.5