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Gs750 Wet Weight?

  • Thread starter Thread starter halz426
  • Start date Start date
H

halz426

Guest
Trying to figure out the spring rate I need for my bike, I am ready to make a purchase.

(I wish I could have weighed my bike at the local grain bin,
but they were swamped with the harvest season , (no time) and the weather is a little brisk now.)

Trying to figure out the total "wet" weight of my bike.

This is for a 1977 gs750 B, I found that the dry weight is 426 lbs, the bike is stock with engine guards. (probably another 5-7 lbs?)

Based on my online search gas weighs about 6.073 pounds per US Gallon.

I believe the factory tank holds 4 gallons (cant find a specific capacity), which would equal 24.29lbs roughly, totaling 450.29 lbs alone w/o oil & rider.

Based on the raceTech site it says the stock spring rate is 0.45 kg/mm (stock)

I rarely carry passengers or carry cargo. I enjoy spirited rides and love twisty roads, My bike is for spirited street rides, no track days.

I wish I could afford a front end swap, but funds don't allow and want to keep it somewhat original.

My plan is to order a set of sonic springs.

Any input is appreciated, Im tired of my squishy front end.

Thanks in advance.
 
Race tech has a calculator for spring rate. Stock springs are typically way soft. Most guys are going 9kg/mm springs
 
halz426 said:
This is for a 1977 gs750 B, I found that the dry weight is 426 lbs, the bike is stock with engine guards.
Click to expand...

According to the factory Suzuki service manual your bike's dry weight is 492 lbs. + accessories.
 
Nessism said:
According to the factory Suzuki service manual your bike's dry weight is 492 lbs. + accessories.
Click to expand...

SuzukiCycles.org also has the dry weight at 492.

GS 750 1977
Overall Length: 2,225 mm (87.6 in)
Overall Width: 855 mm (33.7 in)
Overall Height: 1,170 mm (46.0 in)
Ground Clearance: 150 mm (5.9 in)
Wheelbase: 1,490 mm (58.7 in)
Dry Weight: 223 kg (492 lbs)
Engine type: Air-cooled 748 cc inline-4, DOHC, 8 valves. 72 hp/ 8,500 rpm, 60 Nm/ 7,000 rpm.
Click to expand...

.
 
Thanks for the correction, i dont remember what site i got the 426lbs from.
 
When you buy your springs from Sonic, Rich will tell you what you need to know. He's a member of this forum, and very helpful.
 
You can weigh the bike on a bathroom scale as well (one wheel at a time, so only approximately half the weight at a time). When one wheel is on the scale, make sure the other wheel is parked on a 2x4 or something to keep the wheels level - the weight of the gas and oil will flow downhill and can skew your measurements.
 
Big rich, good idea. I was wondering if i could use bathroom scales, but wasnt sure how accurate it would be. Thx
 
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