Author Topic: Scrambler wheel sizes and shock lengths info required  (Read 201 times)

Offline Kickaha

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From the reading I have done it appears the scrambler could use either a 19 or 21 inch front wheel, if it used the 21 did it use longer rear shocks to compensate for the rake/trail change and were there any changes to the front forks

Asking because my A10 spends a reasonable amount of time on back country unsealed roads which tend to be a bit rougher so I'm looking to make some changes one of which will be wheel sizes to get a wider range of tyres and while I'm at it the suspension will getting a going over as well

1955 BSA Gold Flash
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Online RDfella

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Re: Scrambler wheel sizes and shock lengths info required
« Reply #1 on: 18.11. 2019 10:47 »
I always thouht the main reason for using a 21" front was to alter the trail.
'49 B31, '49 M21, '53 DOT, '58 Flash, '00 Firestorm, Weslake sprint bike.

Offline Kickaha

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Re: Scrambler wheel sizes and shock lengths info required
« Reply #2 on: 18.11. 2019 19:02 »
Bigger diameter rolls over rough stuff better
1955 BSA Gold Flash
New Zealand

Online muskrat

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Re: Scrambler wheel sizes and shock lengths info required
« Reply #3 on: 20.11. 2019 11:51 »
I had a new 1979 XL500S with a 23" front wheel. Yes it took the humps & hollows better but was a bitch in the sand.
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Offline duTch

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Re: Scrambler wheel sizes and shock lengths info required
« Reply #4 on: 20.11. 2019 13:25 »

 On my Plunger A10  I'm running WM1 21 on the front and WM3 18 on the rear,  with Metzler Enduros 1 & 11 (1 & 2) but a Swing Arm model will be a completely different ride
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
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Online JulianS

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Re: Scrambler wheel sizes and shock lengths info required
« Reply #5 on: 20.11. 2019 15:33 »
Interesting bulletin from Hap Alzina in 1959 on modifications to Spitfire Scrambler.

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Re: Scrambler wheel sizes and shock lengths info required
« Reply #6 on: 20.11. 2019 18:32 »
G'day Julian.
"bottom of C on a coke bottle"  *lol* I buy coke in 2000ml bottles !
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Offline Kickaha

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Re: Scrambler wheel sizes and shock lengths info required
« Reply #7 on: 23.11. 2019 19:57 »
Interesting bulletin from Hap Alzina in 1959 on modifications to Spitfire Scrambler.

Thanks Julian, I'm looking at a cartridge conversion for the front forks, that seems to indicate there was nothing different from the normal A10 forks
1955 BSA Gold Flash
New Zealand