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The Suspension Expert
Walter Preisig
The Suspension Shop is located in Adelaide, South Australia, and was established by Walter Preisig to service the market in Australia with a new generation of YSS gas shocks that are continuously under development by him in partnership with YSS in Thailand.
Walter has been developing racing suspension for over 25 years, gaining a wealth of experience in suspension technics, customer service and motorcycle maintenance.
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Ducati
Philosophy
“ It's unwise paying too much, but worse paying too little. By paying too much, you lose a little money. By paying too little, you could lose everything, because what you've bought would be incapable of doing what it was bought for. The law of business balance prohibits paying a little and getting a lot. If you deal with the lowest bidder, it's wise to add a bit for the risk you run and if you do that, you can pay for something better. "
That said and with this in mind, the Suspension Shop is servicing the motorcycle community in Australia and overseas as well as furthering the research, manufacture and development of top quality world class shock absorbers for racing purposes and casual driving without breaking the bank.
Rebuild and Repair with Yonsin Titanium Nuts and Bolts
Motorcycle Titanium Bolts - Make Your Racing Bike As Light As A Feather
Go To Yonsin Titanium Technical Information & Torque Specifications | Go To Yonsin Pictorial
Yonsin Special Parts Titanium Bolts are available to specifications of DIN912, DIN913, DIN931, DIN933, DIN6923 and ISO7380, UNC, UNF and Titanium Nuts to specifications of DIN934, DIN6921 etc... For further information and to order please give us a call on +61 (08) 8284 8033 to assist you in choosing the right nuts and bolts for your project or contact us by E-Mail.
NOTE: Prices shown are in Australian Dollars per piece. For trade orders and packs of ten or more: please call or email for special rates.
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Technical Information & Torque Specifications
Go To Yonsin PRICES | Go To Yonsin Pictorial
All of Yonsin bolts are made with aircraft grade Titanium Alloy. One of the outstanding benefits of Yonsin bolts is that they forge the heads for superior strength. The threads are then rolled to produce greater fatigue strength and reduce galling.
The bolts exceed minimum Ultimate Tensile Strength (UTS) of 120,000 psi. Yonsin can also make titanium bolts that exceed 160,000 psi in Ultimate Tensile Strength (UTS). Both styles of bolts conform to DIN and ASTM specifications. Titanium bolts can replace both grade 5 and grade 8 steel bolts which have minimum UTS requirements of 120,000 psi and 150,000 psi respectively. Metric bolts with an 8.8 rating can be replaced with titanium while bolts with a 10.9 rating can sometimes be replaced with titanium depending on intended use. Any bolts with a rating over 10.9 rating should not be replaced with titanium.
Torque Accuracy on Fasteners
Screw threads appear to be a simple concept yet much confusion and inconsistency exist regarding torque values. The mechanics of the screw thread are actually very complex and have numerous interacting variables. Sliding friction is affected by materials (like steel or aluminum on titanium), surface roughness, bearing area, material hardness, lubrication and so on.
| Method | Accuracy |
|---|---|
| By Feel | +/- 35% |
| Torque Wrench | +/- 25% |
| Turn-of-nut | +/- 15% |
| Preload washers | +/- 10% |
| Bolt elongation | +/- 3% |
| Strain gauges | +/- 1% |
Recommended Torque Spec's for Titanium Fasteners
Use torque values specified by your equipment manufacture, when available. For titanium fasteners the torque values are listed below. We recommend anti-seize or moly paste be applied to the threads. If you have a specified torque value outside the Yonsin range give us a call so that we may be able to more clearly understand your application and provide specific solutions if one exists for the use of titanium in your assembly.
The importance of correct application cannot be overemphasized. Undertorque can result in unnecessary wear of nuts and bolts as well as the parts they hold together. When insufficient pressures are applied, uneven loads will be transmitted throughout the assembly which may result in excessive wear or premature failure due to fatigue. Overtorque can be equally damaging because of failure of the bolt or nut from overstressing the thread areas.
Torque Limits for Metric Size Bolts in Tension |
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| Non-lubricated | Lubricated | ||||
|---|---|---|---|---|---|
| Torque | Torque | Torque | Torque | ||
| Bolt Size | Min. | Max. | Bolt Size | Min. | Max. |
| M6-1.00 | 80 in-lbs | 100 in-lbs | M6-1.00 | 72 in-lbs | 90 in-lbs |
| M8-1.25 | 120 in-lbs | 145 in-lbs | M8-1.25 | 108 in-lbs | 130 in-lbs |
| M10-1.25 | 200 in-lbs | 255 in-lbs | M10-1.25 | 180 in-lbs | 230 in-lbs |
| M10-1.5 | 160 in-lbs | 185 in-lbs | M10-1.5 | 144 in-lbs | 148 in-lbs |
Torque Limits for American Size Bolts in Tension |
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| Non-lubricated | Lubricated | ||||
| Torque | Torque | Torque | Torque | ||
| Bolt Size | Min. | Max. | Bolt Size | Min. | Max. |
| 5/16-18 | 80 in lbs | 90 in lbs | 5/16-18 | 72 in lbs | 81 in lbs |
| 3/8-16 | 160 in lbs | 185 in lbs | 3/8-16 | 144 in lbs | 148 in lbs |
| 3/8-24 | 200 in lbs | 250 in lbs | 3/8-24 | 180 in lbs | 225 in lbs |
| 7/16-14 | 235 in lbs | 255 in lbs | 7/16-14 | 211 in lbs | 229 in lbs |
| 7/16-20 | 520 in lbs | 630 in lbs | 7/16-20 | 468 in lbs | 567 in lbs |
| 1/2-13 | 400 in lbs | 480 in lbs | 1/2-13 | 360 in lbs | 432 in lbs |
| 1/2-20 | 770 in lbs | 950 in lbs | 1/2-20 | 693 in lbs | 855 in lbs |
Pictorial Overview of Yonsin Titanium Nuts and Bolts
Click on Images for Enlargement
Go To Yonsin PRICES | Go To Yonsin Titanium Technical Information & Torque Specifications
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Suspension For Any Winning Motorcycle
The SUSPENSION SHOP is your One-Stop Suspension Shop with a vast range of products at hand - ready made and also customised for any motorcycle. Feel free to call THE SUSPENSION SHOP to discuss a solution for your technical needs.