Author Topic: thunder conrods  (Read 129 times)

Online RDfella

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thunder conrods
« on: 20.07. 2021 15:24 »
Was planning to change my GF conrods to new ones over the winter, as I don't trust alloy rods - especially old alloy rods.
Was considering Thunder rods. Feked refunded my order because they are out of stock, so I contacted thunder engineering direct. But can't get a reply. Anyone know if they're still trading?
'49 B31, '49 M21, '53 DOT, '58 Flash, '00 Firestorm, Weslake sprint bike.

Online RichardL

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Re: thunder conrods
« Reply #1 on: 20.07. 2021 18:36 »
I don't know if they are still trading, but I have their alloy rods and they've performed great (from my non-pro-motorcycle-mechanic perspective) for about 7,000 miles. You might try MAP Cycles.

Richard L.

http://www.mapcycle.com/categories/engine-top-bottom-end/connecting-rods.html
Plan on signing up for the world-wide 2020 DISTINGUISHED GENTLEMAN'S RIDEon September 27, 2020. This year it's a solo or pillion ride in dapper attire. Watch website at https://www.gentlemansride.com for details.


Online berger

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Re: thunder conrods
« Reply #2 on: 20.07. 2021 18:49 »
i bought some thunder rods for the berger build, i have no idea if they still make them. on the other part of thinking my rods in the engine are from the 1950's and my bike gets a thraping hitting 6000 rpm on a regular basis, sometimes 7000 in first and second. but then again i am a nutter who makes it have it. don't be scared of old rods---- i'm not ----yet ;)

Online muskrat

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Re: thunder conrods
« Reply #3 on: 20.07. 2021 21:27 »
G'day Richard.
The MAP rods are the same length as the R&R alloy rods (i have in the Cafe). Which are longer than the stock rods by about 0.030". Easy way to increase comp with flat top pistons.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Offline Billybream

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Re: thunder conrods
« Reply #4 on: 20.07. 2021 22:39 »
I think they are still in business, they are based in leicester and this area has been on annual holiday for the last couple of weeks, so they may well be on shutdown
1960 Super Rocket, owned since 1966, back on the road 2012 after being laid up for 29yrs.

Online RichardL

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Re: thunder conrods
« Reply #5 on: 20.07. 2021 23:57 »
G'day Richard.
The MAP rods are the same length as the R&R alloy rods (i have in the Cafe). Which are longer than the stock rods by about 0.030". Easy way to increase comp with flat top pistons.
Cheers

I'm pretty sure my alloy rods are Thunder sold by SRM some 10 years ago.

Richard L.
Plan on signing up for the world-wide 2020 DISTINGUISHED GENTLEMAN'S RIDEon September 27, 2020. This year it's a solo or pillion ride in dapper attire. Watch website at https://www.gentlemansride.com for details.


Offline Tomcat

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Re: thunder conrods
« Reply #6 on: 21.07. 2021 07:13 »
FWIW I fitted Thunder rods in my Commando and they worked fine. The only problem was they foul the engine cases and needed material removed. This information is available at RGM's website under 'Conrods'. I bought them as the standard rods have a bad reputation (and one ventilated my cases) although standard rods made recently will be better quality than those made in 1974.
'59 Super Rocket  TDM900