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72 t100R center stand

7K views 23 replies 7 participants last post by  StuartMac 
#1 ·
Hello,

When I bought this bike a few weeks ago it did not have a center stand. So, I bought one to put on and did that today. However, it appears when the stand is raised up it will rub on the bottom of the mufflers. Maybe this is why there wasn't a stand on it to begin with? Or am I missing something that would keep the stand from hitting the mufflers. I would really like to have the center stand on the bike but if it won't work then guess I'll have to take it off.

Any suggestions?

Thanks,
John
 
#4 ·
I will work on getting some pictures today.

Fairly certain they are the correct bolts. I bought them here:
https://www.classicbritishspares.co...ardware-kit-82-5678-82-4671-t90-t100-t120-tr6

I did not inspect the bolt holes. I can do that.

I purchased the reproduction stand from www.Britishonly.com
part #F7693. Great looking stand! It does say its suitable for 19 wheels. My front wheel is 19 inch and the rear is 18 inch.

I did notice this morning that the stand is hitting on just the left muffler. I'll keep looking!

Thanks.
 

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#16 ·
I purchased the reproduction stand from www.Britishonly.com
part #F7693. Great looking stand! It does say its suitable for 19 wheels. My front wheel is 19 inch and the rear is 18 inch.

I do not claim to be an expert on the T100 series of bikes That is more the territory of our friend Stuart. However on the T90/T100 bikes there were two center stands used in the mid-60's. Part numbers were 82-7692 & 82-7693. I suspect the difference has to due with the "risers" where the stand contacts the ground. As I originally stated 82-7693 was used on T100R(& C) models that had/have 19" front wheels while the other T90/T100 models at that time had 18" front wheels.


I tend to agree that the contact problem has to do with the way the exhaust system is fitted. I cannot say exactly where the problem is but that is my opinion based on past experiences. I also shudder when I see the word reproduction on parts as it doesn't take a large error to make a part not fit correctly.


With that said I have a great deal of respect for Ken & the crew at British Only. I have done business with them off & on for nearly 40 years and the quality of parts have always been top shelf.


K
 
#5 ·
The bolts kit looks correct as does the stand. I've had the hitting problem with the Triumphs that I've owned in the past. I'm assuming that it's the foot "lever" on the stand that's hitting the muffler; if so, you can glue a piece of rubber to the bottom of the muffler or, if you have it on the bike, glue some rubber pads to the metal strap that goes between the mufflers, under the bike, so that the leg of the centerstand will rest against it. I've used both methods with success. Hope this helps: Jim
 
#6 ·
If it's just the foot lever hitting then why not heat it up near the stand and bend it a little?

It's a repro part so no harm no foul.

Probably won't take more than a half inch bend to get it to clear.

Jim claims to be the Village Idiot but I bet I am dumber than he is! :grin2:
 
#8 ·
Hello, I hope these pictures work. The CStand is hitting on the bottom of the left muffler near the bottom "foot" part of the stand not the foot lever. Unless someone knows of an obvious reason, I may take the stand off and weld a bead or two on the part by the bolt so it will hit before the stand hits the muffler?

Thanks,
John
 

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#12 · (Edited)
Hi John,

Unless someone knows of an obvious reason,
Afaict, the mufflers are too low - there shouldn't be any need for the bits between the passenger footrests and the tops of the muffler brackets.

Be interested to see some side-on shots of the bike of the full length of the exhausts, from head to muffler end but I wonder if that's what happens when a p.o. fits 650 pipes to a 500 and then can't get the mufflers to line up?

I may take the stand off and weld a bead or two on the part by the bolt so it will hit before the stand hits the muffler?
You could do that but, if I'm right about the mufflers, the bike'll have less cornering clearance on the left than an HD Fat Glide with footboards ...

Hth.

Regards,
 
#15 ·
Hi,

I'm no expert on Triumph's but it looks stock to me.
Uh-uh. The muffler mountings definitely aren't "stock". Just temporarily, disconnect the mufflers from the pipes and the passenger footrest mountings, refit the mufflers to the footrests without the Mickey Mouse 'extension pieces' and try retracting the centrestand; I'll be surprised if it still hits the muffler.

What I can't work out is whether the bike has 650 pipes, badly-made pattern 500 pipes (curve exiting at the wrong angle) or well-made but badly-fitted (pushed into the head at the wrong angle) 500 pipes.

The parts manual shows the mounting straps on the mufflers of a 72 T100 to be on the outside of the muffler and not on the inside like the 650. Maybe you possibly have the mufflers on the wrong side of the bike.
Nope. The mounting part of certainly a correct muffler is directly above the centreline of the inlet. In any event, why would that make any difference to the vertical position of the muffler? That the p.o. fitted them with those short pieces between the footrest and the hole in the 'strap' is what causes them to be too low.

It may be the clearance issue. Steadfast Cycles shows these replacement mufflers for your bike having an indentation for the center stand. You possibly have incorrect replacement mufflers on yours.
Nope. Steadfast's are earlier ones. I've mufflers without indentations on my T100. No clearance issue with the centrestand.

Hth.

Regards,
 
#14 · (Edited)
The parts manual shows the mounting straps on the mufflers of a 72 T100 to be on the outside of the muffler and not on the inside like the 650. Maybe you possibly have the mufflers on the wrong side of the bike. It may be the clearance issue. Steadfast Cycles shows these replacement mufflers for your bike having an indentation for the center stand. You possibly have incorrect replacement mufflers on yours.


 
#17 ·
Thanks for the great information.

I am starting to suspect my mufflers not being mounted correctly! I cannot find that short "strap" extension piece in the parts book. My mufflers DO have the indentation on the bottom. Is that not supposed to be there?

If I need to raise the muffler can I just pull it up or do I need to loosen the whole exhaust and refit it?
 
#19 ·
Hi John,

If I need to raise the muffler can I just pull it up or do I need to loosen the whole exhaust and refit it?
Fwiw, I would start:-

. make sure the clamps between mufflers and pipes are good-'n'-tight;

. loosen the brackets between the pipes and the front engine mounting;

. loosen the clamps on the crossover pipe by the head;

. unbolt the short extension pieces between the mufflers and the footrests;

. give the pipes some good hard back-and-forth pulls and pushes to loosen them in the head and at the crossover pipe;

. attempt to lift the muffler brackets up to the footrests.

Reason I suggest doing it that way is if the pipes are correct but just badly-fitted in the head, the mufflers will stay aligned with the pipes while you move the mufflers up. Otoh, if the muffler brackets won't align with the footrest brackets without the mufflers/pipes joint bending, 'fraid it's more likely there's something not correct about the pipes. :(

My mufflers DO have the indentation on the bottom. Is that not supposed to be there?
I wouldn't worry too hard about it; at best, the indentations can only help with clearance from the stand 'feet'.

Hth.

Regards,
 
#21 ·
StuartMac,

I wish I would have seen your comments sooner. Yesterday I loosened all the exhaust pieces and took them off to inspect. When putting them back together without using that extension piece between the muffler and footrest, they aren't lining up correct. Left side tail pipe is 5/8 inch farther away from wheel than right side (from standing behind bike). Left side cant go any closer or it will hit axle nut, so right side needs to move out. Tail pipes are not the same height either! I'll keep trying! Here are some photos of the current situation.

Thanks,
John
 

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#22 ·
Hi John,

Left side tail pipe is 5/8 inch farther away from wheel than right side
Unbolt one end or the other of the brackets between the pipes and the front engine mounting. When you have the exhausts lined up correctly, don't be surprised if the brackets can't be bolted up again. :( I don't know if originals fitted when the bikes were new but I couldn't buy any even remotely close when I was doing the exhaust on my T100 and ended up making 'em from stainless strip (not difficult, as you can tell).

With push-in pipes, don't be tempted to use the bike for any length of time without the brackets, the pipes will rattle around in the head, wear the ports out-of-round and then you have the devil's own job stopping 'em blowing. :mad:

Tail pipes are not the same height either!
Standard on Triumph twins, unfortunately. :( Gk why Meriden designed a pipe bend it (and subsequent pattern makers) couldn't make accurately! :bluduh

Ime, it's a bit of a black art getting twin exhausts both looking good and not blowing. :rolleyes: I see you've managed to get the mufflers attached to the pillion footrests and aligned on the pipes. :thumb I do up the muffler-to-pipe clamps and the pillion footrest bolts so there's a little possible movement but they aren't flopping about. I assemble the pipes on the head spigots (on mine) and the crossover pipe with Copaslip grease and thump and tap-with-a-rubber mallet to get the pipes on the head and on the crossover pipe. I ensure the tailpipes line up and then tighten bolts and clamps from the muffler mountings and clamps forward; the muffler-to-pipe joints sometimes need the aforementioned thumps or taps-with-a-rubber mallet to get the tailpipes to stay aligned as mountings and clamps are tightened ... :whistle As I made the pipes-to-front-engine-mounting brackets, I know they fit; at least this time when you assemble, I'd leave attaching them (if possible) 'til last.

Hth.

Regards,
 
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