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Topic:
Curious question on lowering blocks
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Topic: Curious question on lowering blocks (Read 1097 times)
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b1jackson
Hot Shot
Posts: 448
Curious question on lowering blocks
«
on:
January 13, 2018, 03:43:48 AM »
I rescued these off an older model 550 chopper sort of bike. It had forks that were an extra 6 inches long and these lowering blocks on the rear stock shocks. I have seen them used on a guys 750 before because he was abit vertically challenged.
I've decided to try them on a 550 project bike I am fixing up. Mainly for the look, and it's a bike I'll likely be selling but if I like them and I don't feel they mess handling too much, where can I find another set? Were they a period aftermarket part that no longer exists? It looks like they drop the rear about 2 inches. Yes....the inner fender liner may rub on big bumps. I set the shocks to the mid range for stiffness.
I'd hate to sell them on a bike only to be then searching like mad for a set for my other 550.
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seanbarney41
not really that much younger than an
Really Old Timer ...
Posts: 10,840
Re: Curious question on lowering blocks
«
Reply #1 on:
January 13, 2018, 08:11:39 AM »
I have not seen them available new anywhere. But that said, I just sold off a couple sets that I had accumulated over about the past ten years. I would say they were a fairly common aftermarket addition back in the day, so sets are still out there.
Keep in mind, that the increased angle of the shock also reduces the amount of leverage on the spring, so your shock will be stiffer overall. So even though the wheel is moved closer to the inner fender, there will be less travel.
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If it works good, it looks good...
MikeSimon
MotoManiac
Expert
Posts: 770
Motorcycle Addict
Re: Curious question on lowering blocks
«
Reply #2 on:
January 13, 2018, 10:02:28 AM »
Many of the ones I have seen were homemade. They are a simple chunk of metal and easy to make.
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1973 CB350F -sold
1974 CB350F -218 orig miles, sold
1976 CB750K - in restoration
Other Hondas:
3 x CBX
CB1100R
GB500
Plus Kawasakis, BMws & Ducatis
DV Red Herring
Enthusiast
Posts: 223
Army RETIRED
Re: Curious question on lowering blocks
«
Reply #3 on:
January 13, 2018, 10:40:13 AM »
I have a set of those on mine. My shocks are set stiff as well. I have shorter forks as well. I don't really notice any adverse effects on handling, but then I haven't ridden a stock height bike in a long time.
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Gordon
Global Moderator
Really Old Timer ...
Posts: 12,114
750K1, 550K2
Re: Curious question on lowering blocks
«
Reply #4 on:
January 13, 2018, 12:47:33 PM »
I had a set on my 550 for a while and hated them. They made it ride like a hardtail.
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754
Really Old Timer ...
Posts: 29,058
Re: Curious question on lowering blocks
«
Reply #5 on:
January 14, 2018, 09:00:12 AM »
I don't know if it's the axle, or wrong spacers in the swingarm, but it's not far enough into the threads, and that's unsafe.
As for the bocks, I have seen at least 3 styles, usually not homemade and I ran them for years, and had no problems.
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Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C. Canada
My next bike will be a ..ANFOB.....
It's All part of the ADVENTURE...
73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way
seanbarney41
not really that much younger than an
Really Old Timer ...
Posts: 10,840
Re: Curious question on lowering blocks
«
Reply #6 on:
January 14, 2018, 09:32:05 AM »
Oh yeah...B1, I'm assuming you just dont have your axle nut torqued up and cotter pinned?
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If it works good, it looks good...
b1jackson
Hot Shot
Posts: 448
Re: Curious question on lowering blocks
«
Reply #7 on:
January 14, 2018, 10:34:23 AM »
Haha. Just making you guys look! Rear axle nut isn't tightened. Bike is currently on the operating table in restoration mode.
If anyone has a spare set of blocks they'd sell me fire me a PM. 550 or 750 (if there is a difference). No matter. I have a few of each bike
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evanphi
Apparently I'm an
Old Timer
Posts: 3,107
Rhonda the Basket Case
Re: Curious question on lowering blocks
«
Reply #8 on:
January 16, 2018, 05:13:17 AM »
These were one of the first things I took off my bike when I bought it. Super stiff rear end. Not fun on my local pothole ridden roads.
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--Evan
1975 CB750K "Rhonda"
Delkevic Stainless 4-1 Header, Cone Engineering 18" Quiet Core Reverse Cone, K&N Filter in Drilled Airbox
K5 Crankcase/Frame, K4 Head and Cylinders, K1 Carbs (42;120;1 Turn)
She's a mix-matched (former) basket case, but she's mine.
CB750 Shop Manual (all years), searchable text PDF
Calculating the correct input circumference for digital speedometers connected to the original speedometer drive
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Curious question on lowering blocks