Attaching sidecar

[Martin27]

Hello,

I’m going to have wedding soon and I’d like to attach the sidecar for my wife. I have Scott sidecar from Pavel Simek and want to attach it to my Flyer (standard medium frame), but I have a few questions. There is so much in a old books, but unfortunately each book says bit different informations.

First, sidecar wheel shaft has to be forward the bike rear wheel shaft, there is fixed point, so this is clear.

Next, sidecar wheel should point in 1″-1 1/8″ (25-30 mm). In another book is 40 mm, but I think to make 30 mm (1 1/8″) sounds ok.

Another think is lean of the bike/sidecar wheel, there is more differences, as some book says the bike should lean, at another sidecar wheel, in another both… what to choose? At least they says the same number, sidecar wheel lean 3/8″-5/8″ (10-15 mm), bike lean 5/8″-3/4″ (15-20 mm). Do you have some experiece whith this? What is the best solution? Lean both?

And the last think is slope of the sidecar. Should be the sidecar frame parallel with the road, front part raised or folded down? My guess is slightly raised (for the sprung up of the forks). Is it correct? And how much? Original set ip of the short front bottom rod made some natural slope of the sidecar, but I’m not sure if this is correct.

I would be verry happy if someone could help with advices. Many thanks,

Martin

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[Glyn Chambers]

Martin, I have done thousands of miles over the last 60 years with a sidecar on a flyer or rep. you can not ‘. get it  perfect, however aim to get the sidecar axle just in front of  the bike one  2″ max.Toe in  about 1″, lean out 1″ to 2″  Side car frame level to ground fore and aft.

good luck      POTTY.

[Martin27]

Dear Glyn,

yes, I know you are very experienced Scott sidecar rider, so I’m very happy for your advices. Just one think I’m not sure, lean out both, sidecar wheel and bike as well?

And one more question, what gearbox sprocket do you use? I have 17 teeth prepared for the sidecar use, but I’m not if it’s too slow, as the standard solo rides I use 21 teeth, so to jump 4 teets down sounds a bit too much, but the speed feeling will probably change a lot when the sidecar will be attached…?

Many thanks and I will let you know result. Martin

[Glyn Chambers]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Martin,

Yes the leanout can be shared between the bike & the sidecar  or just the bike,the more leanout you have makes the steering easier.

The gearing depends on the load to be carried  & if a 500 or 600cc engines are used & the load to be carried  & what hills  are likely.

I used    19 or 20 tooth sprockets  on both types of engines,a 17 is far to low for nomal use.

Good Luck

POTTY.

 

 

 

 

 

[Glyn Chambers]

Martin,

What I forgot to say is what gearbox have you got,the ultra close is usless for most sidecar use,the Med/Close is OK but the  late wide ratio the  best.the “Vintage” Wide  gives you a not very good 2nd gear.            ——  POTTY.

 

[Martin27]

Dear Potty,

I did a short ride today, first few meters the bike was pulling too much on ride side, so I had to make a correction and it was ok. Of course, it’s all so different, but I’m slowly getting use to it. Lean out of the sidecar is fixed, so I did a lean out of the bike approximately 1″, right courves are ok, left once bit harder, but I think it just need time. Also was bit different as I rather had a empty sidecar, I was too scared to take a pasanger for first kilometers.

I’m not sure how are the gears of the box, I just found some old photos in my computer af some stamping of the box, on the cover is stamped 3776CM, on the bottom K628, I don’t know if there is some code how to read how are the gears (in case they weren’t changed). I also found some photos of the internals, in case it’s visible difference of the wheels.

Bike is 600 ccm, originaly it was short stroke, but as I couln’t find short stroke barrels and got long stroke once with bike, it’s remade to long stroke engine with 4 ports. My girlfriend as bit less than 50 kg and the wedding is in a bit hilly area, 17 is really too slow, my friend went behind me with BMW R12 and said to me we went about 40 km/h (I don’t have speedo). So 19 could be ok? I will see what other sprocket Pavel Simek has, so most probably I’ll try what’s available or try to buy the plate and reweld the teeth.

Many thanks for all advices, all the best,

Martin

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[Glyn Chambers]

Martin, send me a short email (details in Yowl) so I can reply to it.          POTTY

[Martin27]

my email: martin.dasek@gmail.com

thanks, Martin

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