Topic: Vintage sidecar rebuild - new video

[buca]

Thanks for the advice Bear.  I'll take a baseline trail measurement once the engine is in, then work from there.  The current setup is 'as last raced'.  In the front brake pic you can see a 'winged' washer behind the nut.  The wing is longer on one side, flipping it changes trail.  I have a 2nd set with different length 'wings'.  Basically gives me x4 trail settings.  The previous owner was 120lbs+ heavier, so over stiff springing maybe an issue.  Even with everything at full soft I get no sag when I sit on it.

Your comments about over / understeer are noted.  What kind of alignment (camber / toe) do you run on your chair wheel?  Mine's currently setup with slight neg camber, & as close to zero toe-in as I could get at present.  I'll 'string it' to get hard numbers once the engine is in.

Interesting outfits Borivoje.  Thanks for posting the pic's.

This photo is from our classic race at local airport 2006. Side car is home made powered by suzuki gsx 750. No injures ..

[buca]

Thanks for the advice Bear.  I'll take a baseline trail measurement once the engine is in, then work from there.  The current setup is 'as last raced'.  In the front brake pic you can see a 'winged' washer behind the nut.  The wing is longer on one side, flipping it changes trail.  I have a 2nd set with different length 'wings'.  Basically gives me x4 trail settings.  The previous owner was 120lbs+ heavier, so over stiff springing maybe an issue.  Even with everything at full soft I get no sag when I sit on it.

Your comments about over / understeer are noted.  What kind of alignment (camber / toe) do you run on your chair wheel?  Mine's currently setup with slight neg camber, & as close to zero toe-in as I could get at present.  I'll 'string it' to get hard numbers once the engine is in.

Interesting outfits Borivoje.  Thanks for posting the pic's.

This photo is from our classic race at local airport 2006. Side car is home made powered by suzuki gsx 750. No injures ..

One more photo, same race  Kecman brothers, Brana on controls 73 yrs. Mile , on platform, 69.  This is their home made project finished , ground up, in two month. Engine is suzuki 1100.

[bwaller]

Interesting ventilation system on those leathers.

[TimV840]

...and puddin' bowl helmet with goggles hanging around the pilot's neck! Instant black flag for our group!

[scunny]

I love old hacks.

[buca]

I love old hacks.

These guys are 100% cool. Our club organized classic races just for fun.. There are no strict rules..As you noticed  . But from the other side we try to do our best.. It was fun./Here is my bmw for solo class..

[Tintop]

Almost finished, just body work to go.  The front M/C is a little undersized, with the addition of the drum on the chair.  Feel is OK, but one with a larger piston would improve things.  Used MCR's trick and bled the front caliper with it sitting on top of the disk, so air bleed was at the top.  Then moved it back down.  Also have to check the timing with a strobe.

Front & rear views (with shortened muffler)



Weber all hooked up.

[bwaller]

Looks cool T-Top.

[Tintop]

Thanks BW, Claude (Hopper) did the tape job.  Figured he's the one that has to hold on, and knows what he wants.  Not sold on the red trim bits, but its his favourite colour.  So for peace in the team we have some red.

[bear]

Nice job.
It hardly seems like the same bike.
Glad to see you have worked out S/C rule #1. Keep der passenger happy.
I usually just pat em on the head and feed them lots of beer.
Well done.

Cheers,
Brian

[Retro Rocket]

wow, looking great Brian....

[Sam Green Racing]

Looking fantastic Brian but I think the exhaust needs lifting about 2mm.

Sam.

[Tintop]

Thanks for the comps guys, its been a long slug to get to this point.  Exhaust was done today.  I'll post a photo tomorrow, once its cleaned up and painted.  Painter says the chair wheel cover, chair fairing, and seat will be done tomorrow.  Still hoping to have the dustbin ready for Saturday's 1st race.

Nice job.
It hardly seems like the same bike.
Glad to see you have worked out S/C rule #1. Keep der passenger happy.I usually just pat em on the head and feed them lots of beer.
Well done.

Cheers,
Brian

Figured that was at the top of the page Bear.  I'll make sure there's some beer for Saturday night for the passenger & bwaller.

Looking fantastic Brian but I think the exhaust needs lifting about 2mm.

Sam.

Got it a little higher then 2mm Sam, also nice and tucked in.

[bwaller]

Did I hear someone say BEER. 

It just wouldn't be right unless you were wrenching until the very last minute Brian. But it sounds like you've got all your ducks in a row! See ya soon.

[Tintop]

Did I hear someone say BEER. 

It just wouldn't be right unless you were wrenching until the very last minute Brian. But it sounds like you've got all your ducks in a row! See ya soon.

Beer yes   Ducks in a row no.  That other M/C I thought would work is a radial, so no go, and I found a small brake line leak.  Likely going to be working on the brakes Thursday night at the track.  Good thing I bought the large brake fluid container

[buca]

Thanks for the advice Bear.  I'll take a baseline trail measurement once the engine is in, then work from there.  The current setup is 'as last raced'.  In the front brake pic you can see a 'winged' washer behind the nut.  The wing is longer on one side, flipping it changes trail.  I have a 2nd set with different length 'wings'.  Basically gives me x4 trail settings.  The previous owner was 120lbs+ heavier, so over stiff springing maybe an issue.  Even with everything at full soft I get no sag when I sit on it.

Your comments about over / understeer are noted.  What kind of alignment (camber / toe) do you run on your chair wheel?  Mine's currently setup with slight neg camber, & as close to zero toe-in as I could get at present.  I'll 'string it' to get hard numbers once the engine is in.

Interesting outfits Borivoje.  Thanks for posting the pic's.

Hi, have one question , on our side car  with, right hand side platform, I install  8 valve Kawa engine  GPz1100 fuel injected. But ,in almost every left corner,  have oil pressure lose  for the moment. We weld some barriers in the sump to prevent that, but with poor , or no effect at all. Every advice welcome. Thanx.

[bear]

Strange the baffles don't help Borivoje.
The only wet sump motor we have used was a GSX1100 but that was on speedway. (not the same G-forces involved). We used to run an extra two liters of oil and never had a problem

Cheers,
Brian.

[Sam Green Racing]

Did I hear someone say BEER. 

It just wouldn't be right unless you were wrenching until the very last minute Brian. But it sounds like you've got all your ducks in a row! See ya soon.

Beer yes   Ducks in a row no.  That other M/C I thought would work is a radial, so no go, and I found a small brake line leak.  Likely going to be working on the brakes Thursday night at the track.  Good thing I bought the large brake fluid container

Brian, Brent is partial to a can or 4 of Boddingtons best bitter. 

Sam.

[bwaller]

Oh Sam, you know me so well.    Actually you could have been talking about any red blooded male anywhere. 

[buca]

Strange the baffles don't help Borivoje.
The only wet sump motor we have used was a GSX1100 but that was on speedway. (not the same G-forces involved). We used to run an extra two liters of oil and never had a problem

Cheers,
Brian.

Thanks Brian, i was thinking that way. Do you fill 2 lit extra on stock sump or deeper one? I think to make insert between engine block and sump to make more oil capacity.
                                                                                                           Cheers

[bear]

The GSX could handle the extra oil without mod's and didn't pump any from the crankcase breather.
Try an extra litre with the GPZ and see how it goes.
I am assuming you run a catch tank on your breather line?

Cheers,
Brian

[Tintop]

The XS has a screen sump filter that is deep, and fills enough of the sump, to make it act as a baffled sump.  Probably one of the reasons they survive sidecar use so well.

Rec'd the custom Weber app. throttle cable from Motion Pro, along with a new throttle.  Twisted it and those big butterflies go horizontal.   Added a new set of grey Renthal racing grips, donated by my passenger.

Suppose to pick up some of the body work tomorrow - Seat / Chair fender / chair fairing.  So should have basic body work by tomorrow night.  Still have to check timing, and Weber initial settings, oh and hook up the shifter, and new clutch cable.

Bad news, one brake line connection is weeping.   very soft brake, air most likely.  However, it was already too spongy for me, so....Question (and I don't want a debate of merits, just some fast suggestion's from the knowledge base

The current M/C is a Suzuki GT750, 10 / 11mm piston (using a double  banjo, 10mm x .125 thread).  Operates a single GT750 front caliper, and Mini drum.  I want to replace it with something with a piston 13mm (better) to 16mm (5/8) (adds more bias adjustability, better modulation with lighter feel).  Something with a rectangular reservoir, dog leg lever, easily available parts( eg. Honda / Suzuki / Kaw / Yamaha, cheaper than a new Brembo .  Because of the leak, I'm going to have to re-bleed the brake(s) anyway.  I've got two bike wreckers I can visit Thursday, for a good/used M/C.  Suggestions?

It will give me something (else ) to do in the pits on Thursday night, instead of having a Boddington's.  Unless of course, Brent wants to split Hoppper / Claude's end of the bleeding job.   You only need one hand, the other is free to hold a beer.  

[bear]

Sorry can't help, don't know.

[buca]

The GSX could handle the extra oil without mod's and didn't pump any from the crankcase breather.
Try an extra litre with the GPZ and see how it goes.
I am assuming you run a catch tank on your breather line?

Cheers,
Brian
[/quote
Thanx Brian, yesterday  we look again in engine block sump assembly and 25 mm extra oil  level is oke and dont reach 
crank rotation space. We redesign barrier in the sump and with extra oil,think problem will be solved. Next month we go for classic race in Germany, Schleiz Dreieck historic track with sharp corners and  will report to you .
Thank U again Brian.      Cheers        Borivoje

[bwaller]

I'd go with the 5/8" Nissin, scrap yard should have plenty of those. Sometimes it's necessary to bleed air by cracking open the double banjo bolt at the master cylinder. Those banjo fittings can hold some bubbles. Try to turn the bars and position the master so any bubbles work their way back up to the reservoir too if you haven't already. I know sidecar brake lines won't co-operate completely.

EDIT; by the way a Kawa ZX11 uses a Nissin 5/8