Author Topic: RPM'S and ease of riding and motor damage.  (Read 4496 times)

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Offline Bodain

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Re: RPM'S and ease of riding and motor damage.
« Reply #25 on: September 22, 2007, 12:17:21 PM »
I wonder what he would have to say about my 85 Yamaha RZ... <Grin>
I could only speculate, but this statement is about the silliest thing I ever heard.

Well there was a statement recently made by a guy on our local Craigslist.. The guy was selling 78 550k. The bike actually looked quit good. He was going on about the minor flaws in the bike, one of which was the fact that the electric starter didn't work.

I quote " A mechanic told him these old bikes were better off not using the electric starter. They were not designed for it"

Where do these people come from?
2009 Suzuki TU250
2014 Honda Grom
1988 Yamaha FZ600
2018 Honda Ruckus
1971 Honda CB500
1979 Kawasaki Z750 Twin

Offline LoopsAndLogic

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Re: RPM'S and ease of riding and motor damage.
« Reply #26 on: September 23, 2007, 09:34:24 AM »
Thank you Gordon ;D

 I stopped using my electric starter cause it really drains the battery. And if you drive mostly city, it won't get a good recharge as when you would be driving on backroads or freeways.

I've personally experienced this :)

LL
My rides:
75' 76' Honda CB400F Super Sports
86' Honda XR600R for Street Madness
84' Honda Interceptor VF500

Past Rides:
80' Honda CX500C Fully Dressed
81' Honda CB650C very nice!
83' Kawasaki KZ550 A3
78' Hondamatic 400 Hawk
80' 81' 82' Honda GL500 Silverwing Insterstate

Offline heffay

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Re: RPM'S and ease of riding and motor damage.
« Reply #27 on: September 23, 2007, 10:17:09 AM »
great info here from all.

my 350f loves to be at 7k rpm but, do i ride it there regularly?  no, i keep it around 4k.  but damn... above 5k is just where the power kicks in. 

my 92 kawi zx7r redlines at 11,500rpm.  i've even seen 13,000rpm in 6th gear.  it's a dog below 4.5k and cruises happily any given day and all day at 5-7k rpm.  oh yeah... it is reading 43,000miles on the odometer too.  (that's quite a lot for a solo seat race rep)

inline 4's rev HIGH... it took me a number of years to get used to revving them to the moon, but once i did... ahhhh, heaven.
Today: '73 cb350f, '96 Ducati 900 Supersport
Past Rides: '72 tc125, '94 cbr600f2, '76 rd400, '89 ex500, '93 KTM-125exc, '92 zx7r, '93 Banshee, '83 ATC250R, 77/75 cb400f

Offline Soos

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Re: RPM'S and ease of riding and motor damage.
« Reply #28 on: September 23, 2007, 02:40:32 PM »
great info here from all.

inline 4's rev HIGH... it took me a number of years to get used to revving them to the moon, but once i did... ahhhh, heaven.


I agree a bit of an eye opener on how far and fast you can go with these motors....

And I now no longer feel i'm abusing my bike at 9000rpm.   ;D
The more I ride my 650, the more I REALLY like the upper ranges anyway.
The aceleration is a kick in the pants, and the harleys have a time keeping up....And my motor is about 1/2 the cc's of theirs.

A buddy of mina has a '06 harley(1100cc ?sportster?) motor in a (?)paco frame(chopper anyways) and he gets me off the line, but as soon as he shifts.... I pass him ... for a second.
'cause about then, i'm at 9 grand in second....

not too bad for a $1500 bike, and being nearly 30 years old, and he spent about 16,000 on his..... HAHAHAHhahha......




l8r


-=≡ Soos ≡=-
Just think to yourself what would Alowishus Devander Abercrombie do?
"Brix will be shat by your neighbors." - schwebel
(61mm)652cc 1979 cb650

Offline angeldeville

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Re: RPM'S and ease of riding and motor damage.
« Reply #29 on: September 23, 2007, 03:00:02 PM »
Ride it like a two-stroke! I redline mine daily!

The CB900 customs with the low range tranny was geared for morons who wanted to lug a 4 like a Hardly, not many of those used in the low range of the tranny are around today.
76' cb750f custom
69' cb750 sandcast
69' CT90
Amen Saviour 750 Chopper frame
and enough parts to build about 6-7 more bikes

Offline mlinder

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Re: RPM'S and ease of riding and motor damage.
« Reply #30 on: September 23, 2007, 03:24:06 PM »
I run the 350f at 2k ~ 5k around town, but anywhere else, I'm between 6.5k and 10k.
The bike loves being over 6.5k. It was designed to run and make power at these speeds.
You are cheeting it of its potential if you never hit 6.5k+

The 750 is 3k-5k around town, and 9k+ when I'm goosing it.
Lemme tell you, 3rd gear at 8.5k is a beautiful thing. Everything get's smooth and precise, everything sounds beautiful. It's not struggling, it's not straining, it actually runs best RIGHT THERE at 8.5.
Yesterday, I was between 7k and 9k for pretty much 2 hours. Never hiccupped, and was smooth as butter. 750 is built for those rev ranges. Don''t abuse your poor bike by never letting it run at it's optimal speeds.
No.


Offline paulages

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Re: RPM'S and ease of riding and motor damage.
« Reply #31 on: September 23, 2007, 03:48:37 PM »
mark, i almost left a similar reply after our ride yesterday. especially after my muffler fell off  ::), i can really hear and feel when it's in that sweet spot, and it's usually over 6K. even when i was completely pushing it, it never felt strained. like i said previously, mine loves high RPM, low throttle range. low lugging feels like abuse to these motors.
paul
SOHC4 member #1050

1974 CB550 (735cc)
1976 CB550 (590cc) road racer
1973 CB750K3
1972 NORTON Commando Combat
1996 KLX650 R

Offline hymodyne

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Re: RPM'S and ease of riding and motor damage.
« Reply #32 on: September 24, 2007, 08:38:01 AM »
70mph, 5th gear @5krpm... runs fine and is almost silent...

hym
"All things are ready if our minds be so."