Speed wobbles on a maxim - Sorted

[2wheelsteve]

Ive just got a 1982 yam maxim that is starting speed wobbles on curves at speed, any maxim owners out there had similar, gonna have to check forks, swingarm tracking, tyre pressures, tyre condition, any more proper ideas would be appreciated
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[Ichy]

Not 100% sure it is the same bike but I had a XJ750 that used to wobble in a straight line at 120ish. I stuck a home made brace on the front, removed the headlight fairing and had the wheels balanced. Not sure which was the saviour but it fixed it.

[2wheelsteve]

[evoboy]

I get this on my xj600 at around 100mph when taking bends.

Just kinda ride through it.
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Suzuki GT250 x7------- Fazer 600------CB250RS------Aprilia Rally 70----- Bandit 600

APT Motorcycles

[Welshd1k]

my hornet did this at 90 ish when i had a 16" rim with SHITE tyre. now with a 17" and a decent rubber its fine. i think its down to rubber / balancing and forks twisting
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Current >Cb600fx hornet, ns125rk90 21.7bhp@wheel<
Sold >,zxr400 h2 (33bhp kit) rd350 n1 rd350 lc2<

[2wheelsteve]

[Pernig]

The head bearings that come on it weren't that good to start with, and they are no better after 28 years. If you're really bothered about it it might be worth changing them for a tapered set. However mine is still passing MOTs with 44k on the clock.

Also if your tyre pressures are incorrect or if your tyres are excessively worn, this can cause a bit of a wobble. At one stage I tried some cheap Cheng Shin tyres and the bike handled awfully toward the end of their life. As soon as I changed them it was like riding a new bike.

Also you could check that the front wheel is in balance. This could make a little bit of difference. You could check the back one while you're at it but I find this doesn't affect the handling, just makes for slightly uneven tyre wear.
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H100 Breaking for spares

[2wheelsteve]

Its not like tank slappers Ive had in the past, it feels like the arse end starts waggling, weard and scary but I stay with it easing off slightly and slowly, I know its the front but it feels like the rear, I'll sort it because its not the kind of thing you leave is it I reckon tracking or previous front end damage, ride safe guys
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[2wheelsteve]

Sorted, today I noticed scuffing on the rear tyre wall, the tyre is a very tight fit but today it was raining as usual so the bike wasnt pushed but yep scuffs appeared so yep its rear wheel bearings, ordered and will be sorted when they arrive, brilliant
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[2wheelsteve]

[stinkwheel]

If the wheel bearings are shot, the sprocket carrier bearing wont be far behind them. Remember to replace that too.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[Ichy]

Yes it is a blatant plug but I don't have anything to do with them other than having brought parts off them.

https://simplybearings.co.uk/shop/

Have been very good for most of the bearings I've needed. Not always the cheapest but good quality and usually next day delivery. A complete set of bearing and seals for the CG cost around £15. Absolute bargain.

[2wheelsteve]

[Walloper]

Check the wheel/frame alignment.

But as discussed soggy suspension could be the culprit.

I would plump for dampening not sufficient or out of balance.

A bouncy front or rear could be upsetting the other suspension unit.

Maybe a characterisic of the beast which you need to tame.

Try riding through it....

However many times a speed wobble happens one's chocolate starfish reacts with the same ferocity.
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W-ireless A-rtificial L-ifeform L-imited to O-bservation P-eacekeeping and E-fficient R-epair

[2wheelsteve]

[Pernig]

[2wheelsteve]

No unfortunetly it doesnt have that feature but like I say its miniscule movement that isnt affecting control at all, Ive got loads to do on it anyway but its all good fun, its called bonding with your bike
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